Why don't you buy one of the universal mirrors that clamp onto the windowframe?

Very popular on older American cars from the 40s and 50s, when outside mirrors were an option and not standard.

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles